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Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geological field survey, including mapping and sampling in the Chistochina mining district in the Mount Hayes A-2 and A-3 quadrangles, Alaska, from June 30 to July 15, 2009. The fieldwork provides basic information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. During 2009, 57 rock samples were collected for geochemical trace-element analysis, 107 rock samples were collected for whole rock (major- and minor-oxide and petrogenetically important trace elements) analyses, and 2 samples were collected...
Tags: Alaska Range,
Alaska, State of,
Chisna,
Chistochina Mining District,
Geochemical Data, All tags...
Geochemistry,
Major Oxides,
Minor Oxides,
Mount Hayes Quadrangle,
Platinum Group Elements,
STATEMAP Project,
Slate Creek (Mount Hayes),
Slate Creek Prospect,
Trace Elements,
Trace Metals,
geoscientificInformation, Fewer tags
From June 12-21, 2017, the Alaska Division of Geological & Geophysical Surveys (DGGS) geologists carried out geologic mapping and geochemical sampling in the northeastern Tanacross D-1, and parts of the C-1, and D-2 quadrangles. The project area lies within the Yukon-Tanana Uplands, and encompasses the boundary between Fortymile and Lake George assemblages. It includes porphyry copper-molybdenum-gold deposits and prospects including: Taurus, Fishhook (also known as SW Pika), and Pika Canyon, and is adjacent to the Fortymile Mining District to the north. Highlights of this geochemical report include sampling and characterization of the Pika Canyon, Fishhook, and Taurus prospects. This dataset contains four samples...
Tags: Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results,
Base Metals, All tags...
Chemistry,
Copper,
Critical Minerals,
Dewey Creek,
Divide Mountain,
Economic Geology,
Economic Study,
Exploration,
Fishhook,
Fortymile Mining District,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geologic,
Geology,
Gold,
Lab Methods,
Lead,
Liberty Creek,
Major Oxides,
Metals,
Methods,
Mineral Assessment,
Mineral Deposit,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Mining,
Minor Oxides,
Non-Metals,
Ore Deposit,
Ores,
Pika Canyon Prospect,
Porphyry,
Precious Metals,
Prospecting Sites,
Rare Earth Elements,
Ree,
Resource Assessment,
Resource Information,
Resources,
Sample Location,
Silver,
Stream Sediments,
Tanacross Quadrangle,
Taurus Prospect,
Trace Elements,
Trace Geochemical,
Trace Metals,
geoscientificInformation, Fewer tags
Mineral Resources Section personnel from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geologic field survey, including mapping and sampling, in the eastern part of the Bonnifield mining district in the Fairbanks A-1 and A-2 and the Healy D-1 and D-2 quadrangles, Alaska, from June 16 through July 18, 2008. The fieldwork provides basic information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geologic mapping. Specifically, this work provides geologic context for geophysical surveys conducted in 2006. Interpretation and synthesis of this data has been presented in professional and trade meetings....
Tags: Alaska Range,
Bedrock,
Chute Creek,
Dry Creek,
Dry Creek prospect, All tags...
Fairbanks Quadrangle,
Geologic,
Geology,
Glory Creek,
Glory Creek prospect,
Healy Quadrangle,
Igneous,
Igneous Rocks,
Kansas Creek,
Minerals,
Red Mountain Creek,
Rocks,
Rogers Creek,
STATEMAP Project,
Sedimentary Rocks,
Sheep Creek,
Slide Creek,
Snow Mountain Gulch,
WTF (Western Tundra Flats) prospect,
Wood River,
geoscientificInformation, Fewer tags
The Preliminary Interpretive Report 2004-3B, "Bedrock geologic map of the Livengood SW C-3 and SE C-4 quadrangles, Tolovana mining district, Alaska," is the bedrock geologic map of an approximately 123-square-mile area in the central Livengood Quadrangle, Alaska.
Tags: 40Ar/39Ar,
Alaska, State of,
Geochemistry,
Geochronology,
Geologic Map, All tags...
Geology,
Igneous Rocks,
K-Ar,
Livengood Bench,
Livengood Dome,
Livengood Mining District,
Livengood Quadrangle,
Metamorphic Rocks,
Money Knob,
Old Smoky Prospect,
Plutonic Rocks,
STATEMAP Project,
Sedimentary Rocks,
Sm-Nd Dates,
Tolovana Mining District,
geoscientificInformation, Fewer tags
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geological field survey, including mapping and sampling northeast of Fairbanks in the Circle A-4, A-5, B-4, and B-5 quadrangles, Alaska from May 31 to June 28, 2007. The fieldwork provides basic information critical to building an understanding of Alaska geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. During 2007, 128 rock samples were collected for geochemical trace-element analysis, and 44 rock samples were collected for whole rock (major- and minor-oxide) analysis. Petrogenetically important trace-elements will be analyzed in a subsequent study to...
Tags: Alaska, State of,
Chatanika River,
Circle Quadrangle,
Crooked Creek,
Deep Creek, All tags...
Fairbanks North Star Borough,
Faith Creek,
Frozenfoot Creek,
Geochemistry,
Glacier Pup,
Harrington Fork Birch Creek,
Hope Creek,
Idaho Creek,
Major Oxides,
McManus Creek,
Montana Creek,
Polar Creek,
Pool Creek,
Ruby Creek,
Ryan, Mount,
STATEMAP Project,
Smith Creek,
Sourdough Camp,
Sourdough Creek,
Steese Highway,
Stream Sediments,
Tough Luck Creek,
Trace Metals,
geoscientificInformation, Fewer tags
This data file presents 40Ar/39Ar step-heating geochronology results for a granite sample from the Livengood mining district. The Livengood area is a historically productive placer mining area approximately 80 road miles north of Fairbanks, Alaska. This data is a component of a geologic map and accompanying report that synthesizes recently collected and previously published agency and industry geologic data in a 1:50,000-scale comprehensive geologic map to build a better understanding of the geology and mineral-resource potential of the Livengood area.
Tags: 40Ar/39Ar,
Airborne Geophysical/Geological Mineral Inventory,
Bedrock,
Bedrock Geology,
Cascaden Ridge, All tags...
Copper,
Eolian,
Fossils,
Geochemistry,
Geochronology,
Geologic Map,
Gold,
Igneous Rocks,
Livengood,
Livengood Bench,
Livengood Quadrangle,
Man-Made Deposits,
Metamorphic Rocks,
Money Knob,
Plutonic Rocks,
Ranney Hollow,
STATEMAP Project,
Sedimentary Rocks,
Shorty Creek,
Silver,
Surficial Geology,
Tailings,
Tolovana Mining District,
Tolovana River,
geoscientificInformation, Fewer tags
This geologic map and report depicts portions of the Livengood B-3, B-4, C-3, and C-4 quadrangles. The Livengood area is a historically productive placer mining area approximately 80 road miles north of Fairbanks, Alaska. This report synthesizes recently collected and previously published agency and industry geologic data in a 1:50,000-scale comprehensive geologic map to build a better understanding of the geology and mineral-resource potential of the Livengood area. It expands and updates the Alaska Division of Geological & Geophysical Surveys (DGGS) Preliminary Interpretive Report (PIR) 2004-3 with the addition of new DGGS mapping and drillhole data from ITH, and integrates previously published DGGS surficial...
Tags: 40Ar/39Ar,
Airborne Geophysical/Geological Mineral Inventory,
Bedrock,
Bedrock Geology,
Cascaden Ridge, All tags...
Copper,
Eolian,
Fossils,
Geochemistry,
Geochronology,
Geologic Map,
Gold,
Igneous Rocks,
Livengood,
Livengood Bench,
Livengood Quadrangle,
Man-Made Deposits,
Metamorphic Rocks,
Money Knob,
Plutonic Rocks,
Ranney Hollow,
STATEMAP Project,
Sedimentary Rocks,
Shorty Creek,
Silver,
Surficial Geology,
Tailings,
Tolovana Mining District,
Tolovana River,
geoscientificInformation, Fewer tags
This bedrock geologic map was produced by using airborne magnetic and electromagnetic surveys, data and notes from several months of fieldwork, geochemical data, and laboratory investigations. These maps are the result of new field investigations in the Eagle A-1 Quadrangle by DGGS in 1999, 2000, and 2001. Field investigations are part of a three-year mapping program to provide geologic ground truth for airborne geophysical surveys flown by DGGS in the Fortymile mining district during 1998.
Tags: Alaska, State of,
Alluvial Deposits,
Colluvial Deposits,
Eagle Quadrangle,
Fortymile Mining District, All tags...
Fortymile River,
Geology,
Glacial Deposits,
Igneous Rocks,
Jack Wade Junction,
Man-Made Deposits,
Metamorphic Rocks,
Mining,
STATEMAP Project,
Steele Creek Dome,
Taylor Highway,
Top of the World Highway,
Unconsolidated Deposits,
geoscientificInformation, Fewer tags
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geological field survey, including mapping and sampling in the eastern part of the Bonnifield mining district in the Fairbanks A-1, A-2, Healy D-1 and D-2 quadrangles, Alaska from June 16 to July 18, 2008. The fieldwork provides basic information critical to building an understanding of Alaska geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. During 2008, 242 rock samples were collected for geochemical trace-element analysis, 106 rock samples were collected for whole rock (major- and minor-oxide and petrogenetically important trace element) analyses, and...
Tags: Alaska Range,
Alaska, State of,
Buzby prospect,
Chute Creek,
Denali Borough, All tags...
Dry Creek,
Dry Creek placer mine,
Dry Creek prospect,
Fairbanks Quadrangle,
Forgotten Creek,
Geochemistry,
Glacier Creek,
Glory Creek,
Glory Creek prospect,
Healy Quadrangle,
Kansas Creek,
Kansas Creek prospect,
LEA Creek prospect,
Major Oxides,
Newman Creek,
Newman Creek placer mine,
Red Mountain Creek,
Red Mountain Creek prospect,
Rogers Creek,
STATEMAP Project,
Sheep Creek,
Slate Creek,
Slide Creek,
Smog prospect,
Snow Mountain Gulch,
Stream Sediments,
Threemile Creek,
Trace Metals,
WTF (Western Tundra Flats) prospect,
West Fork Little Delta River,
Wood River,
geoscientificInformation, Fewer tags
This geologic map was produced by merging a bedrock geologic map and a surficial geologic map of the Eagle A-1 Quadrangle. Surficial geologic units were determined by a combination of air photo interpretation and site-specific field investigations. Bedrock geologic units were determined by using a combination of airborne magnetic and electromagnetic surveys, several months of fieldwork, geochemical data, and laboratory investigations. These maps are the result of new field investigations by DGGS in 1999 and 2001.
Tags: Alaska, State of,
Alluvial Deposits,
Colluvial Deposits,
Eagle Quadrangle,
Fortymile Mining District, All tags...
Fortymile River,
Geology,
Glacial Deposits,
Igneous Rocks,
Jack Wade Junction,
Man-Made Deposits,
Metamorphic Rocks,
Mining,
STATEMAP Project,
Steele Creek Dome,
Taylor Highway,
Top of the World Highway,
Unconsolidated Deposits,
geoscientificInformation, Fewer tags
Naturally occurring asbestos (NOA) develops in predictable geologic settings worldwide. Various geologic units throughout Alaska include rock types that could potentially host naturally occurring asbestos minerals. This report and digital data release show geologic map units throughout Alaska rated according to their interpreted potential to host NOA. To summarize locations of known asbestos occurrences, we searched the U.S. Geological Survey's (USGS's) Alaska Resource Data File (http://ardf.wr.usgs.gov) and Mineral Resource Data System (http://mrdata.usgs.gov/mineral-resources/mrds-ak.html) for references to asbestos in Alaska and compiled the resulting 62 documented asbestos occurrences. To better predict additional...
Tags: Alaska Statewide Maps,
Alaska Statewide Quadrangle,
Asbestos,
Construction Materials,
Derivative, All tags...
Engineering Geologic Map,
Historic Mine,
Mineral Localities,
Mineral Prospect,
Mountain Leather,
Tremolite,
Ultramafic,
geoscientificInformation, Fewer tags
During the 2017 field season, geologists from the Alaska Division of Geological & Geophysical Surveys (DGGS) conducted geologic mapping and sampling of part of the Richardson Mining District southeast of Fairbanks, including parts of the Big Delta B-4, B-5, and C-5 quadrangles. The project area is about 30 miles west of the Pogo gold mine and covers the currently active Montecristo and Uncle Sam gold-exploration properties. The goal of DGGS's work in this area is to conduct a mineral-resource assessment and to build an improved understanding of the area's geology and controls on gold mineralization to facilitate industry exploration targeting. This report is based on 17 days of fieldwork completed June 23-July 3,...
Tags: Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results,
Base Metals, All tags...
Big Delta Quadrangle,
Chemistry,
Critical Minerals,
Economic Geology,
Economic Study,
Exploration,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geologic,
Geology,
Lab Methods,
Major Oxides,
McCoy Creek,
Metals,
Methods,
Mineral Assessment,
Mineral Deposit,
Mineral Localities,
Mineral Prospect,
Mineral Resources,
Minerals,
Mining,
Minor Oxides,
Minton Creek,
Monte Cristo Creek,
Non-Metals,
Ore Deposit,
Ores,
Precious Metals,
Prospecting Sites,
Resource Assessment,
Resource Information,
Resources,
Richardson Mining District,
Sample Location,
Stream Sediments,
Trace Elements,
Trace Geochemical,
Trace Metals,
Uncle Sam prospect,
geoscientificInformation, Fewer tags
Report of Investigation 2006-2, "Bedrock geologic map of the Liberty Bell area, Fairbanks A-4 Quadrangle, Bonnifield mining district, Alaska," is the bedrock geologic map of an approximately 131-square-mile area surrounding the Liberty Bell Mine. The geology of the Liberty Bell area, located in the northern Alaska Range foothills, comprises Devonian metasedimentary and meta-igneous rocks of the Totatlanika Schist and Keevy Peak formations, Cretaceous and Tertiary igneous rocks, and overlying unconsolidated Tertiary sedimentary rocks of the Usibelli Group and the younger Nenana Gravel.
Tags: 40Ar/39Ar,
Alaska, State of,
Bedrock Geologic Map,
Bonnifield Mining District,
Coal, All tags...
Fairbanks Quadrangle,
Geochemical Data,
Geochronology,
Geology,
Igneous Rocks,
Jumbo Dome,
Liberty Bell Mine,
Metamorphic Rocks,
Palynology,
Petrography,
STATEMAP Project,
Sedimentary Rocks,
Volcanic Rocks,
geoscientificInformation, Fewer tags
The rock samples in this publication were collected in 2006 during geologic field mapping within the Council airborne geophysical survey tract. The analyses were acquired to aid interpretation and development of the geologic map and evaluation of the area's mineral potential. To further geologic understanding of the area, igneous and metamorphic rock samples were selected for whole-rock geochemical analysis. Unweathered or minimally weathered rock samples were preferentially selected for analysis. Non-carbonate carbon analyses were obtained to determine the percentage of graphite in metasedimentary rocks. To help evaluate the area's mineral resource potential, rock samples were selected for geochemical analysis;...
Tags: Alaska, State of,
Bluff,
Casadepaga River,
Council,
Council Mining District, All tags...
Geochemistry,
Major Oxides,
Nome Quadrangle,
STATEMAP Project,
Seward Peninsula,
Solomon Quadrangle,
Trace Metals,
geoscientificInformation, Fewer tags
Mineral-resources personnel from the Alaska Division of Geological & Geophysical Surveys carried out a geological field survey, including mapping and sampling, in the eastern part of the Bonnifield mining district in the Fairbanks A-1 and A-2, and the Healy D-1 and D-2 quadrangles, Alaska, from June 16 through July 18, 2008. The fieldwork provides basic information critical to building an understanding of Alaska's geology and is part of an integrated program of airborne geophysical surveys followed by geological mapping. Specifically, this work provides geologic context for geophysical surveys conducted in 2006. To represent a typical lithology, igneous or possible meta-igneous samples were collected and analyzed...
Tags: Alaska Range,
Analyses,
Analyses and Sampling,
Analytical Lab Results,
Analytical Results, All tags...
Bedrock,
Bedrock Geology,
Chemistry,
Chute Creek,
Dry Creek,
Fairbanks Quadrangle,
Geochemical Data,
Geochemical Surveys,
Geochemistry,
Geologic,
Geology,
Healy Quadrangle,
Igneous,
Igneous Rocks,
Kansas Creek,
Lab Methods,
Metamorphic Rocks,
Methods,
Mineral Assessment,
Mineralogy,
Minerals,
Red Mountain Creek,
Resource Assessment,
Resource Information,
Resources,
Rocks,
Rogers Creek,
STATEMAP Project,
Sample Location,
Sheep Creek,
geoscientificInformation, Fewer tags
The Geologic Photos of Alaska database and online application contains photographs taken during and in support of Alaska Division of Geological & Geophysical Surveys (DGGS) projects. These photographs primarily document field sites and geomorphology statewide, usually in remote locations that are often impossible or prohibitively expensive to revisit. The database (http://maps.dggs.alaska.gov/photodb/) includes a variety of images such as field photos, photos of samples, and photomicrographs (photograph of a microscopic object) taken with the aid of a microscope.
Tags: Alaska Statewide Quadrangle,
Alaska, State of,
Analyses and Sampling,
Energy Resources,
Geologic, All tags...
Geologic Hazards,
Geologic Materials,
Geological Process,
Geology,
Geomorphology,
Glaciers,
Igneous Rocks,
Metamorphic Rocks,
Mineral Resources,
Resource Information,
Resources,
Rock Units,
Rocks,
Sample Location,
Sand and Gravel,
Sedimentary Rocks,
Structural Geology,
Structure,
Volcanic Rocks,
Volcanoes,
geoscientificInformation, Fewer tags
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